V-Pac™ Stack Temperature Control System
Lowers Stack Temperature on:
- High RAP Mixes
- Open Graded Mixes
Raises Stack Temperature on:
- Virgin Mixes
- Low RAP Mixes
Allows running SMA and high RAP mixes back-to-back with virgin mixes without flight adjustments
*U.S. Patent No. 8,863,404 B1
V-flights provide greater uniformity of the aggregate veil during the drying process, which results in better heat transfer, a reduction of fuel use, increased productivity and longer bag life
Automatic Temperature Control
The V-Pac Stack Temperature Control System monitors exhaust gas temperatures at the baghouse inlet as the primary reference for control. As the exhaust gas temperature changes, the control system checks it against a set-point. If the temperature differs from the set-point, the control system automatically changes the speed of the drum, controlling temperature to the set-point.
Uniform Veiling of Aggregates
V-flights produce a uniform veil of virgin aggregate across the entire drum, regardless of the plant's production rate or the RAP percentage used. This enables drum speed changes to effectively control stack temperature. Since the v-flights shower uniformly without regard to material level, there is no "efficiency-robbing" hole in the veil.